diff -u b/core/modules/system/src/Tests/Update/LocalActionsAndTasksConvertedIntoBlocksUpdateTest.php b/core/modules/system/src/Tests/Update/LocalActionsAndTasksConvertedIntoBlocksUpdateTest.php
--- b/core/modules/system/src/Tests/Update/LocalActionsAndTasksConvertedIntoBlocksUpdateTest.php
+++ b/core/modules/system/src/Tests/Update/LocalActionsAndTasksConvertedIntoBlocksUpdateTest.php
@@ -38,7 +38,7 @@
     $help_blocks = entity_load_multiple_by_properties('block', ['region' => 'help']);
     $this->runUpdates();
     $this->assertRaw('Because your site has custom theme(s) installed, we had to set local actions and tasks blocks into the content region. Please manually review the block configurations and remove the removed variables from your templates.');
-    
+
     $page = Node::create([
       'type' => 'page',
       'title' => 'Page node',